# Casper, Wyoming

Casper is a city in and the county seat of Natrona County, Wyoming, United States. Casper is the second-most populous city in the state after Cheyenne, with the population at 59,038 as of the 2020 census. Casper is nicknamed "The Oil City" and has a long history of oil boomtown and cowboy culture, dating back to the development of the nearby Salt Creek Oil Field.
Casper is in east central Wyoming, on the North Platte River.

## History

Casper was established east of the former site of Fort Caspar, in an area that attracted European settlers during the mid-19th century mass migration of land seekers along the Oregon, California, and Mormon trails, where several nearby ferries offered passage across the North Platte River in the early 1840s. In 1859, Louis Guinard built a bridge and trading post near the original ferry locations, allowing overland travel to continue through the area.
The government also posted the military garrison to protect telegraph and mail service. It was under the command of Lieutenant Colonel William O. Collins. Native American attacks increased after the 1864 Sand Creek Massacre in Colorado, bringing more troops to the post, which was by now called Platte Bridge Station. In July 1865, a group of Indian warriors killed Collins's son Caspar Collins near the post, and three months later the garrison was renamed Fort Caspar in his honor.
In 1867, the troops were ordered to abandon Fort Caspar in favor of Fort Fetterman, downstream on the North Platte along the Bozeman Trail. But the town itself was settled in 1887, and incorporated a year later by developers as an anticipated stopping point during the Wyoming Central Railway's expansion.
A site a few miles east was planned as the original site, where homesteader Joshua Stroud lived before the construction of the station for the Chicago and North Western Railway. The Pioneer Town Site Company laid out the site in 1888 and it was known as Strouds, but the name Casper soon prevailed. While the name is derived from Fort Caspar and Caspar Collins, it is named "Casper" due to a typo during the official registration.
Casper was an early commercial rival to both Bessemer and Douglas, Wyoming. The absence of a railhead doomed Bessemer in favor of Casper, while Douglas, also a railhead, survives. This rail presence also made Casper the starting point for the "invaders" in the Johnson County War, since the chartered train carrying the men from Texas stopped at Casper.
Casper received a significant influx of visitors during the solar eclipse of August 21, 2017, due to its position along the path of totality.

## Geography

Interstate 25, which approaches Casper from the north and east, is the main avenue of transportation to and from the city. The towns immediately adjacent to Casper are Mills, Evansville, and Bar Nunn. Unincorporated areas include Allendale, Dempsey Acres, Red Buttes, and Indian Springs.
According to the United States Census Bureau, the city has an area of 27.24 square miles (70.55 km$^2$), of which 26.90 square miles (69.67 km$^2$) is land and 0.34 square miles (0.88 km$^2$) is water.

### Climate

Like most of Wyoming, Casper has a continental semi-arid climate (Köppen climate classification: BSk), with long, cold, dry winters, hot but generally dry summers, mild springs, and short, crisp autumns. Normal daily maxima range from 35.2 °F (1.8 °C) in January to 89.0 °F (31.7 °C) in July. Snow can fall heavily during the winter and early to mid-spring months, and usually falls in May and October. Precipitation is greatest in spring and early summer, but even then is not high. Highs reach 90 °F (32.2 °C) on 37.8 days per year and fail to surpass freezing on 41.3. Lows drop to 0 °F (−17.8 °C) on an average of 14.6 nights annually. The highest temperature recorded in Casper was 104 °F (40.0 °C) on July 12, 1954; July 16, 2005; and July 29, 2006; the lowest was −42 °F (−41.1 °C) on December 22, 2022.
Climate data for Casper, Wyoming (Casper-Natrona County International Airport), 1991–2020 normals, extremes 1948–present :
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °F (°C) | 60 (16) | 68 (20) | 77 (25) | 84 (29) | 95 (35) | 102 (39) | 104 (40) | 102 (39) | 100 (38) | 87 (31) | 73 (23) | 66 (19) | 104 (40) |
| Mean maximum °F (°C) | 50.8 (10.4) | 55.1 (12.8) | 68.1 (20.1) | 76.9 (24.9) | 85.4 (29.7) | 94.3 (34.6) | 99.1 (37.3) | 96.9 (36.1) | 91.9 (33.3) | 80.1 (26.7) | 65.7 (18.7) | 52.8 (11.6) | 99.5 (37.5) |
| Mean daily maximum °F (°C) | 35.2 (1.8) | 37.8 (3.2) | 48.8 (9.3) | 56.3 (13.5) | 66.8 (19.3) | 79.6 (26.4) | 89.0 (31.7) | 86.7 (30.4) | 75.6 (24.2) | 59.7 (15.4) | 45.9 (7.7) | 34.7 (1.5) | 59.7 (15.4) |
| Daily mean °F (°C) | 25.1 (−3.8) | 26.6 (−3.0) | 35.8 (2.1) | 42.3 (5.7) | 52.0 (11.1) | 62.5 (16.9) | 71.0 (21.7) | 69.0 (20.6) | 58.9 (14.9) | 45.3 (7.4) | 34.0 (1.1) | 24.8 (−4.0) | 45.6 (7.6) |
| Mean daily minimum °F (°C) | 15.0 (−9.4) | 15.4 (−9.2) | 22.7 (−5.2) | 28.2 (−2.1) | 37.1 (2.8) | 45.4 (7.4) | 53.0 (11.7) | 51.4 (10.8) | 42.2 (5.7) | 30.9 (−0.6) | 22.0 (−5.6) | 14.8 (−9.6) | 31.5 (−0.3) |
| Mean minimum °F (°C) | −12.2 (−24.6) | −10.0 (−23.3) | 3.3 (−15.9) | 13.8 (−10.1) | 24.5 (−4.2) | 37.4 (3.0) | 42.9 (6.1) | 40.0 (4.4) | 29.1 (−1.6) | 13.9 (−10.1) | −2.6 (−19.2) | −11.5 (−24.2) | −20.8 (−29.3) |
| Record low °F (°C) | −40 (−40) | −32 (−36) | −25 (−32) | −6 (−21) | 16 (−9) | 25 (−4) | 30 (−1) | 29 (−2) | 16 (−9) | −9 (−23) | −27 (−33) | −42 (−41) | −42 (−41) |
| Average precipitation inches (mm) | 0.49 (12) | 0.56 (14) | 0.84 (21) | 1.41 (36) | 2.21 (56) | 1.34 (34) | 1.19 (30) | 0.79 (20) | 0.95 (24) | 1.19 (30) | 0.64 (16) | 0.61 (15) | 12.22 (308) |
| Average snowfall inches (cm) | 9.0 (23) | 10.9 (28) | 10.3 (26) | 10.5 (27) | 2.6 (6.6) | 0.1 (0.25) | 0.0 (0.0) | 0.0 (0.0) | 1.5 (3.8) | 7.0 (18) | 8.9 (23) | 11.0 (28) | 71.8 (183.65) |
| Average precipitation days (≥ 0.01 in) | 6.0 | 6.9 | 8.0 | 10.3 | 11.0 | 8.5 | 6.8 | 5.8 | 6.8 | 7.6 | 6.2 | 7.0 | 90.9 |
| Average snowy days (≥ 0.1 in) | 6.1 | 7.5 | 6.8 | 6.0 | 1.6 | 0.0 | 0.0 | 0.0 | 0.5 | 3.8 | 5.6 | 7.6 | 45.5 |
| Mean monthly sunshine hours | 204.6 | 172.3 | 269.7 | 300.0 | 334.8 | 354.0 | 368.9 | 368.9 | 333.0 | 217.0 | 204.0 | 198.4 | 3,325.6 |
| Mean daily sunshine hours | 6.6 | 6.1 | 8.7 | 10 | 10.8 | 11.8 | 11.9 | 11.9 | 11.1 | 7 | 6.8 | 6.4 | 9.1 |
| Mean daily daylight hours | 9.5 | 10.6 | 12.0 | 13.4 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 9.1 | 12.2 |
| Percent possible sunshine | 69 | 58 | 73 | 75 | 73 | 77 | 79 | 86 | 89 | 64 | 70 | 70 | 74 |
| Average ultraviolet index | 2 | 2 | 2 | 2 | 5 | 6 | 6 | 6 | 4 | 2 | 2 | 2 | 3 |
| Source 1: NOAA, Weather Atlas (sun data) ||||||||||||||
| Source 2: National Weather Service ||||||||||||||

## Demographics
### 2010 census

As of the census of 2010, there were 55,316 people, 22,794 households, and 14,237 families residing in the city. The population density was 2,056.4 inhabitants per square mile (794.0/km$^2$). There were 24,536 housing units at an average density of 912.1 per square mile (352.2/km$^2$). The racial makeup of the city was 92.3% White, 1.0% African American, 0.9% Native American, 0.8% Asian, 2.3% from other races, and 2.6% from two or more races. Hispanic or Latino people of any race were 7.4% of the population.
There were 22,794 households, of which 31.5% had children under the age of 18 living with them, 46.1% were married couples living together, 11.2% had a female householder with no husband present, 5.2% had a male householder with no wife present, and 37.5% were non-families. Of all households 30.3% were made up of individuals, and 10.1% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.95.
The median age in the city was 36 years. 23.9% of residents were under the age of 18; 10.2% were between the ages of 18 and 24; 26.7% were from 25 to 44; 26.4% were from 45 to 64; and 12.9% were 65 years of age or older. The gender makeup of the city was 49.7% male and 50.3% female.

### 2000 census

As of the census of 2000, there were 49,644 people, 20,343 households, and 13,141 families residing in the city. The population density was 2,073.2 people per square mile (800.5 people/km$^2$). There were 21,872 housing units at an average density of 913.4 per square mile (352.7/km$^2$). The racial makeup of the city was 94.03% White, 0.86% Black, 1.00% Native American, 0.49% Asian, 0.02% Pacific Islander, 2.04% from other races, and 1.56% from two or more races. 5.35% of the population were Hispanic or Latino of any race.
There were 20,343 households, out of which 31.8% had children under the age of 18 living with them, 49.6% were married couples living together, 11.1% had a female householder with no husband present, and 35.4% were non-families. Of all households 29.1% were made up of individuals, and 10.2% had someone living alone who was 65 years of age or older. The average household size was 2.38 and the average family size was 2.94.
In the city, the population was spread out, with 25.9% under the age of 18, 10.5% from 18 to 24, 27.7% from 25 to 44, 22.3% from 45 to 64, and 13.6% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 95.0 males. For every 100 females aged 18 and over, there were 91.6 males.
The median income for a household in the city was $36,567, and the median income for a family was $46,267. Males had a median income of $34,905 versus $21,810 for females. The per capita income for the city was $19,409. About 8.5% of families and 11.4% of the population were below the poverty line, including 15.4% of those under age 18 and 7.3% of those age 65 or over.

## Economy

Casper is a regional center of banking and commerce.
After the discovery of crude oil in the region during the 1890s, Casper became the regional petroleum industry center. Oil has figured prominently in its history from nearly the outset. It was first discovered in the Salt Creek Oil Field in 1889, about 40 miles (64 km) north of Casper; the first refinery in Casper was built in 1895. The city has featured a refinery ever since, with various refineries built and closed over the years. As recently as the early 1980s, the city was near or home to three refineries. The surviving one, operated by Sinclair Oil Corporation, is in nearby Evansville. Development of Wyoming coal and uranium fields in recent decades has helped Casper continue its role as a center in the energy industry.
Casper Wind Farm began operations near Casper in Natrona County and has 11 turbines with a generating capacity of 16.5 MW. Energy Transportation Inc. is headquartered in Casper. This logistics firm transports overweight and outsized components used in the wind power industry. The Casper landfill is also a disposal site for windmill blades.

## Education

Casper is home to Casper College, a community college that offers bachelor's degrees in 16 areas of study from the University of Wyoming through its UW/CC Center.
Public education in Casper is provided by Natrona County School District #1, the county's only school district. The district operates 16 elementary schools, five middle schools, and three high schools in Casper. The high schools are Kelly Walsh, Natrona County, and Roosevelt High Schools. A program called CAPS is being added to Natrona County School District, which will provide more space and classrooms for juniors and seniors at the high schools.
Casper has a public library, a branch of the Natrona County Public Library System.

## Media

Casper is served by one print newspaper, the Casper Star-Tribune, a daily, and until recently the Casper Journal, a weekly. Casper is also home to WyoFile, an online publication focusing on state issues, and Oil City News, an online news and media site. Casper is served by 30 radio stations on FM and AM. KTWO 1030 AM is the state's oldest radio station. Casper is served by the following television stations: KTWO-TV (channel 2), affiliated with ABC; KCWY (channel 13), affiliated with NBC (and The CW on DT2); KGWC-TV (channel 14), affiliated with CBS; and KFNB (channel 20), affiliated with Fox. Casper also has a member station of PBS, KPTW, on channel 8. Almost all the city's FM stations and all its TV stations broadcast from Casper Mountain south of the city.

## Sports

* UFC 6 took place at the Casper Events Center in 1995.
* Casper hosted the AIFA Championship Bowl III at the Casper Events Center on July 26, 2009.
* The Events Center has hosted the College National Finals Rodeo since 2001.
* The Casper Recreation Center offers basketball, fitness, racquetball, volleyball and is adjacent to the Casper Family Aquatics Center and Casper Ice Arena.
* Soccer matches are held at the Casper Soccer Complex.
* The Casper Municipal Golf Course is a public 27-hole golf course in Casper.
Sports teams based in Casper include:
* Casper Cannibal RFC, an amateur rugby football team in the Eastern Rockies Rugby Football Union
* Casper Coyotes were a Junior A hockey team in the Western States Hockey League (WSHL) that played out of the Casper Ice Arena. They were renamed the Casper Bobcats for the 2018–19 season and folded before the 2019–20 season.
* Casper Ghosts (formerly). From 2001 to 2011, Mike Lansing Field hosted the Ghosts of the Pioneer League, Rookie-level affiliate of the Colorado Rockies. In 2011, the team relocated to Grand Junction, Colorado to become the Rockies.
* Casper Horseheads (formerly). From 2018 to 2022 the Horseheads, a collegiate summer baseball team of Independence League Baseball, played their home games at Mike Lansing Field before closing operations.
* Casper Spuds, a collegiate summer baseball team of Independence League Baseball that started play in the summer of 2023, after relocating from Caldwell, Idaho, playing their home games at Mike Lansing Field.

## Culture
### Museums and historical sites

Casper is home to a number of museums and historical sites:
* Fort Caspar Museum and Historic Site
* National Historic Trails Interpretive Center, a federally funded and operated museum
* Nicolaysen Art Museum
* Tate Geological Museum at Casper College
* Werner Wildlife Museum
* Wyoming Veterans Memorial Museum
* The Science Zone
* Historic Bishop Home

### Performing arts and music

Casper has three locations offering theater: the Gertrude Krampert Theatre at Casper College, Stage III Community Theatre, and the Casper Events Center, where an annual series of touring Broadway shows, Broadway in Casper, can be seen.
Casper is home to the Troopers, a drum and bugle corps in Drum Corps International, and the Wyoming Symphony Orchestra. In the summer, Casper's City Band performs free concerts Thursday evenings at Washington Park.

### Architecture

Wyoming National Bank, a mid-century modern tower, was designed by Charles Deaton and is featured in Casper's logo.

## Transportation
### Highways

Interstate Highways:
* I-25 – North-South Interstate running from Las Cruces, New Mexico to its terminus at I-90 in Buffalo, Wyoming.
US Routes:
* US 20 – East–west route through Casper that runs concurrent with I-25 through Casper. At exit 189 the highway continues west out of Casper, and no longer runs concurrent with the interstate. The business route of US 20 follows North Beverly Street and Yellowstone Highway going east–west from I-25/US 87 (Exit 186) to U.S. 20–26 west of Casper in Mills.
* US 26 – East–west route through Casper that runs concurrent with I-25 through Casper. At exit 189 the highway continues west out of Casper, and no longer runs concurrent with the interstate. The business route of US 26 follows North McKinley Street and Yellowstone Highway going east–west from I-25/US 87 (Exit 187) to U.S. 20–26 west of Casper in Mills.
* US 87 – North-South through Casper that runs concurrent with I-25 through Casper.
Wyoming State Highways:
* WYO 220 (North Poplar Street, CY Avenue) – East–west route from I-25/US 87 (Exit 188B) west out of Casper towards Alcova.
* WYO 251 (Wolcott Street, Casper Mountain Road) – North–south route that continues south out of Casper and up Casper Mountain, eventually ending at WYO 487.
* WYO 252 (South Poplar Street) – North–south route from the intersection of Poplar Street and CY avenue to Casper Mountain Road.
* WYO 254 (Salt Creek Hwy.) – North–south route from I-25/US 87 south to US 20-26 (Yellowstone Highway) in Mills.
* WYO 255 (Center Street, 9th Strert, CY Avenue) – North–south route from I-25 exit 188A to the intersection of South Poplar Street and CY Avenue, where CY Avenue continues as WY 220.
* WYO 258 (Wyoming Blvd.) – East-West loop route from I-25/US 87 to US 20-26 west of Casper in Mills; the majority of the highway runs along the southern borders of Casper.

### Airports

The city has scheduled air service at Casper–Natrona County International Airport, a former army air base built during World War II. The runways are large, having been built for bombers. It replaced Wardwell Field north of Casper, which later became the town of Bar Nunn. The airport is west of the city just off of US Highway 20/26. In 2004, the airport facilities were renovated. Passenger service is offered by United Express (SkyWest Airlines and GoJet Airlines) and Delta Connection (SkyWest Airlines). FedEx Express and FedEx Feeder provide cargo airline service.

### Public transit

Public transit in the Casper area was formerly provided by the Casper Area Transportation Coalition but is now offered by the city of Casper as Casper Area Transit. It offers fixed route service called Casper Area LINK and an on-request service called ASSIST from Monday to Saturday.

### Scheduled bus service

Scheduled bus service once offered by Power River Bus Lines is now offered by ExpressArrow (formerly Black Hills Stages).

## Notable people

* Logan Wilson (born 1996), linebacker for the Cincinnati Bengals
* John Barrasso (born 1952), U.S. senator
* Zane Beadles (born 1986), former Utah Ute offensive lineman; former member of the San Francisco 49ers
* C. J. Box (born 1958), author
* Tom Brewer (born 1958), member of the Nebraska Legislature
* Tom Browning (1960-2022), former major-league pitcher
* Taven Bryan (born 1996), professional football player
* Dick Cheney (born 1941), U.S. vice president, Secretary of Defense; CEO of Halliburton Company; grew up in Casper
* Liz Cheney (born 1966), lawyer; member of U.S. State Department; daughter of Dick Cheney; attended elementary school in Casper; elected to the U.S. House of Representatives
* Lynne Cheney (born 1941), wife of former Vice President Dick Cheney
* Tom Coburn (1948–2020), U.S. Senator from Oklahoma
* Barbara Cubin (born 1946), former member of the U.S. House of Representatives; grew up and graduated from high school in Casper
* Mike Devereaux (born 1963), professional baseball player with World Series rings with Los Angeles Dodgers and Atlanta Braves
* Ron Franscell (born 1957), journalist, crime author
* Mary Meyer Gilmore (born 1947), former Democratic member of the Wyoming House of Representatives
* Rick Koerber (born 1973), convicted felon who was found guilty in federal court of orchestrating and running a $100 million Ponzi scheme
* Marlan Scully (born 1939), physicist best known for his work in theoretical quantum optics
* Matthew Scully (born 1959), author, speechwriter
* Matthew Shepard (born 1976), murder victim for whom the Matthew Shepard Hate Crime Act is named
* Patrick Joseph Sullivan (1864–1935), mayor of Casper, Wyoming, 1897–1898; member of United States Senate from Wyoming, 1929–1930
* Floyd Volker (1921–1995), professional basketball player
* Pete Williams (born 1952), NBC News journalist covering the U.S. Justice Department.

## In popular culture

* The protagonist Dr Shaun Murphy from the ABC show The Good Doctor is from Casper.